Animation of Knabe & Gaehle English double action

Knabe & Gaehle Square Piano Specifications

DIMENSIONS70x34x37Inches
NUMBER OF KEYS75Keys
MUSIC DESK20x8.5Inches
STRINGS143Strings
TOTAL STRING TENSION16,878Lbs
STRING BREAK FORCE157,000Lbs/sq.in.
STRINGING7 single bassRemaining double
STRING LENGTH58.75" to2"
NOTE RANGEF toG
AGE1839 to 1841
MATERIALRosewoodveneer
BUILT INBaltimoreMaryland
PEDALSSustainSoft
NUMBER OF DAMPERS56Dampers

Bob's Handy String Designer
How does total tension on strings in piano vary with "A" tuning frequency?